Patents by Inventor Mitsuru Kamikawa

Mitsuru Kamikawa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20200307312
    Abstract: A drive shaft is configured by joining solid stub shafts formed of a medium carbon steel to both ends of a hollow tubular body formed of a medium carbon steel. When expressed as grain size number, the grain size of the hollow tubular body at joint parts where the hollow tubular body and the solid stub shafts are joined together ranges from #5 to #9, and the grain size of the solid stub shafts at the joint parts ranges from #10 to #12.
    Type: Application
    Filed: March 24, 2020
    Publication date: October 1, 2020
    Inventors: Mitsuru Kamikawa, Naoto Shibata, Ko Sugai, Masafumi Yamamoto, Takafumi Murakami, Kazuya Kumei, Yutaka Takeuchi, Masaki Kawamura
  • Patent number: 10480586
    Abstract: A first constant velocity joint is equipped with a cup part made of a light alloy. First ball grooves that receive a torque from torque transmitting members are formed on an inner wall of the cup part. A high hardness layer made of ceramic or cermet as a principal component thereof is formed on an inner surface of the cup part including at least inner surfaces of the first ball grooves.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: November 19, 2019
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Mitsuru Kamikawa
  • Patent number: 10247248
    Abstract: A drive shaft includes a first shaft member made of metal, a tubular member made of CFRP, and a first exterior sleeve. The first shaft member is capable of being attached on one end side thereof to a first constant velocity joint, and has a first serrated part on which serrations are formed on another end side thereof. The tubular member is formed with a first fitting part fitted externally over the first serrated part. The first exterior sleeve covers the first fitting part by being disposed to extend over outer circumferential surfaces of the first shaft member and the tubular member. A film provided with a bonding assistance region and an adhesive are interposed between the outer circumferential surface of the tubular member and the inner circumferential surface of the first exterior sleeve.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: April 2, 2019
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Mitsuru Kamikawa
  • Publication number: 20190085891
    Abstract: A rotational driving force transmission mechanism includes a cylindrical shaft made of fiber reinforced plastic, and a first constant velocity joint. The shaft is joined to the first constant velocity joint via a metallic intervening member which is attached to one end of the shaft in the axial direction. The intervening member includes a shaft portion and a main body portion. The shaft portion is inserted into the one end of the shaft from a distal end side thereof. The main body portion is of a bottomed tubular shape made up from a bottom part joined to a proximal end side of the shaft portion, and a tubular portion fitted over the one end of the shaft. The first constant velocity joint includes an inner ring fitted externally over the tubular portion of the intervening member.
    Type: Application
    Filed: September 17, 2018
    Publication date: March 21, 2019
    Inventors: Mitsuru Kamikawa, Taisuke Sakakibara, Junichi Suto
  • Publication number: 20170227059
    Abstract: A drive shaft includes a first shaft member made of metal, a tubular member made of CFRP, and a first exterior sleeve. The first shaft member is capable of being attached on one end side thereof to a first constant velocity joint, and has a first serrated part on which serrations are formed on another end side thereof. The tubular member is formed with a first fitting part fitted externally over the first serrated part. The first exterior sleeve covers the first fitting part by being disposed to extend over outer circumferential surfaces of the first shaft member and the tubular member. A film provided with a bonding assistance region and an adhesive are interposed between the outer circumferential surface of the tubular member and the inner circumferential surface of the first exterior sleeve.
    Type: Application
    Filed: January 26, 2017
    Publication date: August 10, 2017
    Inventor: Mitsuru Kamikawa
  • Publication number: 20170219015
    Abstract: A first constant velocity joint is equipped with a cup part made of a light alloy. First ball grooves that receive a torque from torque transmitting members are formed on an inner wall of the cup part. A high hardness layer made of ceramic or cermet as a principal component thereof is formed on an inner surface of the cup part including at least inner surfaces of the first ball grooves.
    Type: Application
    Filed: January 26, 2017
    Publication date: August 3, 2017
    Inventor: Mitsuru Kamikawa
  • Patent number: 7767044
    Abstract: Disclosed is an efficient heat treatment method which can be performed in a short time. Specifically disclosed is a method for heat-treating a steel material wherein a plastically deformed steel work is introduced into a heat treatment furnace when the work still retains the heat applied thereto during the plastic deformation, then the work is heated preferably at a heating rate of 15-50 DEG C./min and held at a temperature between Ac1 and Ac3 for 10 minutes or less, and then the work is slowly cooled at a cooling rate of 5-45 DEG C./min. This heat treatment method enables to easily produce a steel material having a uniform metal structure by simple facilities.
    Type: Grant
    Filed: March 15, 2006
    Date of Patent: August 3, 2010
    Assignee: Honda Motor Co., Ltd.
    Inventors: Mitsuru Kamikawa, Hiroaki Yoshida, Shigekazu Ito
  • Publication number: 20080210352
    Abstract: Disclosed is an efficient heat treatment method which can be performed in a short time. Specifically disclosed is a method for heat-treating a steel material wherein a plastically deformed steel work is introduced into a heat treatment furnace when the work still retains the heat applied thereto during the plastic deformation, then the work is heated preferably at a heating rate of 15-50 DEG C./min and held at a temperature between Ac1 and Ac3 for 10 minutes or less, and then the work is slowly cooled at a cooling rate of 5-45 DEG C./min. This heat treatment method enables to easily produce a steel material having a uniform metal structure by simple facilities.
    Type: Application
    Filed: March 15, 2006
    Publication date: September 4, 2008
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Mitsuru Kamikawa, Hiroaki Yoshida, Shigekazu Ito
  • Patent number: 7093526
    Abstract: A method of manufacturing a billet for cold forging according to the present invention is characterized by the first spheroidizing annealing step of spheroidizing a carbide in a blank, the drawing step of drawing the blank at a predetermined sectional area reduction ratio after the first spheroidizing annealing step, and the second spheroidizing annealing step of promoting the dispersion of the internal carbide for an increased spheroidizing ratio after the drawing step. The drawing step has a drawing ratio of approximately 20%. The blank is cut to a desired dimension between said first spheroidizing annealing step and said second spheroidizing annealing step.
    Type: Grant
    Filed: February 26, 2004
    Date of Patent: August 22, 2006
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Shoichi Ando, Hiroshi Ono, Tadashi Kobayashi, Mitsuru Kamikawa, Fumio Fukuda, Eiki Matsuura
  • Publication number: 20040261918
    Abstract: A method of manufacturing a billet for cold forging according to the present invention is characterized by the first spheroidizing annealing step of spheroidizing a carbide in a blank, the drawing step of drawing the blank at a predetermined sectional area reduction ratio after the first spheroidizing annealing step, and the second spheroidizing annealing step of promoting the dispersion of the internal carbide for an increased spheroidizing ratio after the drawing step. The drawing step has a drawing ratio of approximately 20%. The blank is cut to a desired dimension between said first spheroidizing annealing step and said second spheroidizing annealing step.
    Type: Application
    Filed: February 26, 2004
    Publication date: December 30, 2004
    Applicant: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Shoichi Ando, Hiroshi Ono, Tadashi Kobayashi, Mitsuru Kamikawa, Fumio Fukuda, Eiki Matsuura
  • Publication number: 20040255635
    Abstract: A method of manufacturing a billet for cold forging according to the present invention is characterized by the first spheroidizing annealing step of spheroidizing a carbide in a blank, the drawing step of drawing the blank at a predetermined sectional area reduction ratio after the first spheroidizing annealing step, and the second spheroidizing annealing step of promoting the dispersion of the internal carbide for an increased spheroidizing ratio after the drawing step. The drawing step has a drawing ratio of approximately 20%. The blank is cut to a desired dimension between said first spheroidizing annealing step and said second spheroidizing annealing step.
    Type: Application
    Filed: February 26, 2004
    Publication date: December 23, 2004
    Applicant: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Shoichi Ando, Hiroshi Ono, Tadashi Kobayashi, Mitsuru Kamikawa, Fumio Fukuda, Eiki Matsuura
  • Patent number: D874392
    Type: Grant
    Filed: July 13, 2018
    Date of Patent: February 4, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yu Kamikawa, Naoko Tomoda, Mitsuru Okubo, Yoshiyuki Kusano
  • Patent number: D874393
    Type: Grant
    Filed: July 16, 2018
    Date of Patent: February 4, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yu Kamikawa, Naoko Tomoda, Mitsuru Okubo, Yoshiyuki Kusano